#!/usr/bin/env bash
# 在无宝塔 pyenv 的 CentOS 上编译安装 Python 3.11（需 root）
# 用法: chmod +x scripts/install_python311.sh && ./scripts/install_python311.sh
set -euo pipefail

PYVER="3.11.9"
PY_SHORT="3.11"
PREFIX="/usr/local/python${PY_SHORT}"
PY_BIN="${PREFIX}/bin/python${PY_SHORT}"
SRC="/usr/src/Python-${PYVER}"

if [ "$(id -u)" -ne 0 ]; then
  echo "[错误] 请用 root 运行"
  exit 1
fi

if [ -x "$PY_BIN" ]; then
  echo "[OK] 已存在 $PY_BIN"
  "$PY_BIN" -c "import sys,ssl; print(sys.version); print(ssl.OPENSSL_VERSION)"
  echo
  echo "安装项目依赖:"
  echo "  cd /home/www/wwwroot/douyin"
  echo "  KEFU_PYTHON=$PY_BIN ./install.sh"
  exit 0
fi

echo "========================================"
echo "  编译安装 Python ${PYVER}"
echo "  安装路径: ${PREFIX}"
echo "========================================"

if command -v yum &>/dev/null; then
  yum groupinstall -y "Development Tools" || yum install -y gcc make
  yum install -y openssl-devel bzip2-devel libffi-devel zlib-devel \
    readline-devel sqlite-devel xz-devel wget tar
elif command -v apt-get &>/dev/null; then
  apt-get update
  apt-get install -y build-essential libssl-dev zlib1g-dev libbz2-dev \
    libreadline-dev libsqlite3-dev libffi-dev wget tar
else
  echo "[错误] 不支持的系统，请手动安装编译依赖"
  exit 1
fi

mkdir -p /usr/src
cd /usr/src
if [ ! -f "Python-${PYVER}.tgz" ]; then
  wget -q "https://www.python.org/ftp/python/${PYVER}/Python-${PYVER}.tgz"
fi
rm -rf "$SRC"
tar xzf "Python-${PYVER}.tgz"
cd "$SRC"

./configure --prefix="$PREFIX" --enable-optimizations --with-openssl=/usr
make -j"$(nproc 2>/dev/null || echo 2)"
make altinstall

echo
echo "[OK] 安装完成"
"$PY_BIN" -c "import sys,ssl; print(sys.version); print('OpenSSL:', ssl.OPENSSL_VERSION)"
echo
echo "下一步:"
echo "  cd /home/www/wwwroot/douyin"
echo "  rm -rf backend/.venv"
echo "  KEFU_PYTHON=$PY_BIN ./install.sh"